Re: Problems evaluating WMI method

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On Wednesday 01 October 2008 21:13:50 Duarte Silva wrote:
> I got the correct answer when I do instance = 0x33 and method_id = 0x01.
> So, I looked at hp-wmi.c code and acer-wmi.c and they depend on this
> instance and method_id. But my laptop doesnt seem to depend. 

acer-wmi doesn't rely on the instance_id, it just gets ignored. It does use 
the method_id though.

> Is this 
> instance and method_id a WMI standart or is it a HP and Acer laptop
> specific? My laptop is a LG.

Yes, these are part of the WMI standard (in that, they need to be passed in). 
I would recommend you read through the spec:

http://web.archive.org/web/20071011004327/http://www.microsoft.com/whdc/system/pnppwr/wmi/wmi-acpi.mspx

Essentially - you need to pass the instance and method id's, but what values 
you pass and their meaning is completely vendor specific (which is pretty 
much a good summary of ACPI-WMI in general).

-Carlos
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